CN114199613A - Thin-wall soil sampler capable of measuring water content of soil sample - Google Patents
Thin-wall soil sampler capable of measuring water content of soil sample Download PDFInfo
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- CN114199613A CN114199613A CN202111281619.0A CN202111281619A CN114199613A CN 114199613 A CN114199613 A CN 114199613A CN 202111281619 A CN202111281619 A CN 202111281619A CN 114199613 A CN114199613 A CN 114199613A
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- 239000002689 soil Substances 0.000 title claims abstract description 350
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 238000005527 soil sampling Methods 0.000 claims abstract description 123
- 238000001514 detection method Methods 0.000 claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 239000000523 sample Substances 0.000 claims description 198
- 230000002093 peripheral effect Effects 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 7
- 210000000476 body water Anatomy 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 9
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- 230000008569 process Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 12
- 238000005553 drilling Methods 0.000 description 11
- 238000005070 sampling Methods 0.000 description 11
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- 239000007789 gas Substances 0.000 description 2
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- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- 239000008239 natural water Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
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Abstract
The embodiment of the application discloses thin-wall geotome of measurable soil sample water content relates to geotechnical engineering reconnaissance equipment technical field, has solved the low quality problem that geotome water content measurement and soil sample were taken. The thin-wall soil sampler capable of measuring the water content of the soil sample comprises a base, a soil sampling assembly and a detection assembly; the first end of the base is used for being connected with the drill rod, and the second end of the base is provided with a limiting pipeline; the soil sampling assembly comprises a soil sampling pipe, the extending direction of the soil sampling pipe is consistent with that of the limiting pipeline, the soil sampling pipe is positioned in the limiting pipeline, and the soil sampling pipe is connected with the limiting pipeline in a sliding mode through a first sliding mechanism; the detection assembly is located soil sampling intraductal, through second slide mechanism and soil sampling pipe sliding connection, and the detection assembly includes water content detection piece and bracing piece, and the first end of bracing piece and the second of base hold fixed connection, and the second of bracing piece holds and water content detection piece fixed connection, and the second of bracing piece holds the one end that the base was kept away from to the soil sampling pipe. The application discloses thin wall geotome of measurable soil sample water content is used for taking the soil sample and measuring soil body water content.
Description
Technical Field
The embodiment of the application relates to the technical field of geotechnical engineering investigation, in particular to a thin-wall geotome capable of measuring the water content of a soil sample.
Background
In the geotechnical engineering investigation process, according to engineering requirements, a soil sample is required to be adopted for indoor tests to determine physical and mechanical parameters of soil bodies of all soil layers, wherein the water content index of the soil bodies has important influence on the physical and mechanical properties of the soil bodies. However, in the process of sampling, transporting and storing the soil sample, due to mechanical disturbance generated by sealing and carrying, the water content measurement value of the soil sample is influenced, and the real situation of the water content in the undisturbed soil body cannot be reflected.
The soil sampler in the related art is characterized in that an annular water content test sensor is fixed at the upper end inside a thin-wall device for sampling a soil sample, the lower end of the annular water content test sensor is connected with a probe, a drill is driven by a drill to press the thin-wall device connected with the drill into a soil body for sampling the soil sample, and when the soil sample is extruded to the probe in the thin-wall device, the probe is penetrated into the soil body to measure the water content of the body, so that the water content data of the soil body can be obtained while the soil sample is sampled.
However, because the probe in the soil sampler is fixed at the upper end of the interior of the thin-wall device, the soil sample needs to be collected first, and then the water content of the soil sample needs to be measured, and the thin-wall device can generate mechanical disturbance to the soil body when the soil sample is collected, so that the quality of the water content data of the soil body obtained by the probe is low. Meanwhile, the drill rod is driven by the drilling machine, so that the thin-wall device connected with the drill rod is pressed into a soil body for soil sample collection, the drill rod or the thin-wall device is possibly inclined, and the soil collection quality is influenced.
Disclosure of Invention
The embodiment of the application provides a thin wall geotome of measurable soil sample water content, has improved the accuracy of soil body water content data, and the high quality of borrowing.
The embodiment of the application provides a thin-wall soil sampler capable of measuring water content of a soil sample, which comprises a base, a soil sampling assembly and a detection assembly; the first end of the base is used for being connected with the drill rod, and the second end of the base is provided with a limiting pipeline; the soil sampling assembly comprises a soil sampling pipe, the extending direction of the soil sampling pipe is consistent with that of the limiting pipeline, the soil sampling pipe is positioned in the limiting pipeline, and the soil sampling pipe is connected with the limiting pipeline in a sliding mode through a first sliding mechanism; the detection assembly is located soil sampling intraductal, through second slide mechanism and soil sampling pipe sliding connection, and the detection assembly includes water content detection piece and bracing piece, and the first end of bracing piece and the second of base hold fixed connection, and the second of bracing piece holds and water content detection piece fixed connection, and the second of bracing piece holds the one end that the base was kept away from to the soil sampling pipe.
The utility model provides a pair of thin wall geotome of measurable soil sample water content, with water content detection piece fix the bracing piece and be close the one end that the base was kept away from to the geotome, realize carrying out soil body water content earlier and measure, carry out the soil sample again and take, hold at the second of base and set up spacing pipeline, the geotome is through first slide mechanism and spacing pipeline sliding connection, the geotome is along the soil body of spacing pipeline impressing, the geotome can not take place crooked, the geotome high quality. Specifically, the first end of the base is used for being connected with the drill rod, the second end of the base is provided with a limiting pipeline, the extending direction of the soil taking pipe is consistent with that of the limiting pipeline and the soil taking pipe is located in the limiting pipeline, the soil taking pipe is in sliding connection with the limiting pipeline through a first sliding mechanism, the soil taking pipe is pushed to slide relative to the limiting pipeline, and the soil taking pipe is pressed into a soil body along the limiting pipeline to achieve soil taking of the soil taking pipe; the detection assembly is located soil sampling intraductal, through second slide mechanism and soil sampling pipe sliding connection, and the detection assembly includes water content detection piece and bracing piece, and the first end of bracing piece and the second of base hold fixed connection, and the second of bracing piece holds and water content detection piece fixed connection, and the second of bracing piece holds the one end that the base was kept away from to the soil sampling pipe. When carrying out the borrowing, be connected borrowing ware and drilling rod, transfer the borrowing ware to the relevant position, through exerting pressure to the drilling rod, carry out soil body water content measurement in pressing into soil with water content detection piece, then exert thrust to the pipe of borrowing for pipe and spacing pipeline relative slip will be got the soil and the pipe is impressed the soil body along spacing pipeline and is realized the borrowing of pipe of borrowing. Compared with the prior art, the circular ring type water content testing sensor is arranged at the upper end of the thin-wall pipe, the drill rod is driven by the drilling machine to enable the thin-wall device connected with the drill rod to be pressed into soil for soil sample collection, the water content of the soil is measured before the soil sample collection, the soil sampling pipe is pressed into the soil along the limiting pipeline to sample the soil, high-quality water content data are obtained for geotechnical engineering investigation, the reliability of subsequent engineering construction is improved, and meanwhile, the soil sampling quality is high.
In a possible implementation of this application, first slide mechanism is first piston, and the one end that the geotome is close to the base is with first piston fixed connection, and the geotome passes through first piston and spacing pipe seal sliding connection. The first sliding mechanism can also be a sliding part and a sliding rail which are in sliding fit.
In a possible implementation manner of the application, the second sliding mechanism is a second piston, the first end of the supporting rod can slide to pass through the first piston and is fixedly connected with the second end of the base, the second end of the supporting rod is fixed with the second piston, and the supporting rod and the water content detection piece are in sealing sliding connection with the soil sampling pipe through the second piston. The second sliding mechanism can also be a sliding part and a sliding rail which are in sliding fit.
In a possible implementation of this application, have the pressure chamber between first piston and the base, seted up the medium opening on the base, the medium opening communicates pressure chamber and medium source, and when the medium got into the pressure chamber by the medium opening, can promote first piston and take place to keep away from the slip of base along spacing pipeline to the direction motion of base is to keeping away from to the drive geotome. The first piston is pushed by the medium to slide along the limiting pipeline away from the base, so that the soil taking operation is convenient. The medium can be drilling fluid or gas. .
In a possible implementation of the application, the base is provided with a buffer chamber therein, the buffer chamber is used for communicating with the hole inside the drill rod, and the medium circulation hole is used for communicating the buffer chamber with the pressure cavity. The medium is enabled to enter the pressure cavity through the medium circulation hole at a constant speed through the buffer cavity, and the soil sampling pipe is stably pushed to be pressed into the soil body.
In one possible embodiment of the application, the medium passage openings are a plurality and the plurality of medium passage openings are arranged uniformly along the inner wall of the pressure chamber at the outlet of the pressure chamber. The medium circulation hole can set up one or more, and a plurality of medium circulation holes can improve the speed to the pressure chamber pressure boost, improve the efficiency of fetching earth, and the even overall arrangement of a plurality of medium circulation holes is favorable to the even atress of pressure chamber, keeps the balance of pressure chamber.
In a possible implementation of this application, the geotome is including dismantling sample soil pipe and the surplus soil pipe that links together, and surplus soil pipe and first piston fixed connection, second piston and water content detection piece are less than the length of surplus soil pipe along the length of the extending direction of geotome. The soil sampling pipe can be an integral pipe body or a multi-section pipe body. In order to receive the soil sample of water content detection piece disturbance and the soil sample separation that does not receive water content detection piece disturbance, the sampling tube comprises sample soil pipe and surplus soil pipe that can dismantle the link together to the length of first piston and water content detection piece is less than the length of surplus soil pipe, will receive the soil sample of water content detection piece disturbance through surplus soil pipe and collect, makes water content measurement and soil sample take the process each other not influence, has improved the quality that sample soil taken.
In a possible implementation of this application, the soil sampling pipe still includes the connecting pipe, and the outer wall of appearance soil pipe and surplus soil pipe all is equipped with the screw thread, and the inner wall of connecting pipe is provided with the screw thread, and the connecting pipe cover is established in the outside of appearance soil pipe and surplus soil union coupling department, through the screw thread with appearance soil pipe and surplus soil union coupling. The detachable connection of the sample soil pipe and the residual soil pipe can be threaded connection, buckled connection and the like. The threaded connection has the characteristics of simple structure, reliable connection and convenient assembly and disassembly, so the sample soil pipe and the residual soil pipe are connected through the threads.
In one possible implementation of the present application, the residual soil pipe is detachably connected to the first piston. If the residual soil pipe is welded with the first piston, when the residual soil pipe needs to be replaced due to the abrasion of threads on the outer wall of the residual soil pipe, the residual soil pipe and the first piston need to be replaced together, the cost of maintenance and use is improved, therefore, the residual soil pipe and the first piston are detachably connected, and when bolts on the outer wall of the residual soil pipe are abraded, only the residual soil pipe needs to be replaced, so that the raw material cost is saved.
In a possible implementation manner of the application, the soil sampler further comprises a sealing cover, and the sealing cover can be connected with two ends of the soil sampling pipe and used for sealing and storing the soil sampling pipe. The two ends of the sample soil in the sample soil pipe are exposed in the external environment, and are easily affected by mechanical disturbance and environmental temperature and humidity in the later transportation and storage processes, so that the subsequent indoor test measurement result is affected. Therefore, the sealing caps are connected with the two ends of the sample soil pipe to seal and store the sample soil in the sample soil pipe, so that the sample soil pipe is prevented from being influenced by mechanical disturbance and environmental temperature and humidity.
In a possible implementation of this application, water content detection piece includes a central probe and a plurality of peripheral probe, and a plurality of peripheral probe evenly set up around the axis of central probe, and central probe and a plurality of peripheral probe all set up along the extending direction of geotome, and lie in the piston and keep away from one side of base. The central probe is used as an inner conductor electrode, the peripheral probe is used as an outer conductor electrode, and a plurality of peripheral probes surrounding the central probe are arranged to form an annular coaxial electrode, so that the water content detection precision is improved.
In one possible implementation of the present application, the central probe and the two peripheral probes are spaced in a line along a side of the piston away from the base. Because the more peripheral probes, the greater the disturbance to the soil body, the central probe and the two peripheral probes are arranged at intervals in a straight line.
In one possible implementation of the present application, the water content detecting member is detachably connected to an end of the second piston away from the base. The water content detects the piece when measuring the soil body water content, in the soil body that need impress, easily produces extrusion deformation or damage, simultaneously, because surplus soil pipe reuse, the intraduct that needs to remain is cleared up to the use up at every turn, consequently, can dismantle the water content detects the piece and is connected with the second piston, convenient clearance and change, and the replacement cost is low.
In a possible implementation of the application, have first pin hole in the second piston, have the second pin hole on the base, first pin hole detects the inside intercommunication of piece and bracing piece with water content, and the second pin hole is with the inside and outside intercommunication of base of bracing piece, and the water content detects the piece and is connected with water content processing equipment through wearing to establish the cable in first pin hole and the second pin hole in proper order. Because the in-process that the soil sampling was being carried out to the geotome, the water content detects the piece and slides to being close to base one end through the second piston, in order to prevent to be used for connecting water content detection piece and water content treatment facility cable and produce mechanical disturbance or influence the leakproofness of pressure chamber to the sample soil in the geotome, set up first pin hole and second pin hole on second piston and base respectively, detect the piece through first pin hole and second pin hole with the water content, the inside and the outside intercommunication of geotome of bracing piece, the quality of taking of sample soil and the leakproofness of pressure chamber have been improved.
In one possible implementation manner of the application, the base is provided with an exhaust passage, and the exhaust passage is used for communicating the interior of the soil sampling pipe with the exterior of the base. Because the in-process that the soil sampling was taken to the geotome, the moisture content detects the piece and slides to being close to first piston one end through the second piston, and there is the air between second piston and the first piston, in order to avoid atmospheric pressure to influence the slip of second piston, and then influence the adoption of soil sampling, set up the inside exhaust passage with the outside intercommunication of base of geotome on the base, when the second piston slides to being close to first piston one end, through the air between exhaust passage exhaust second piston and the first piston, make things convenient for the geotome to take the soil sampling.
Drawings
FIG. 1 is a front view of a thin-walled soil sampler capable of measuring water content of a soil sample and connected with a drill rod according to an embodiment of the present disclosure;
FIG. 2 is a sectional view of a thin-walled soil sampler capable of measuring water content of a soil sample and connected with a drill rod according to an embodiment of the present disclosure;
FIG. 3 is a front view of a soil sampling pipe of a thin-wall soil sampler capable of measuring water content of a soil sample according to an embodiment of the present application;
FIG. 4 is a right side view of a thin-walled soil sampler for measuring water content of a soil sample and a drill rod according to an embodiment of the present disclosure;
FIG. 5 is a cross-sectional view of a second slide mechanism of a thin-walled soil sampler for measuring water content of a soil sample according to an embodiment of the present application;
FIG. 6 is a cross-sectional view of the base of a thin-walled soil sampler for measuring the water content of a soil sample according to an embodiment of the present application.
Reference numerals:
1-a base; 11-a limiting pipe; 12-media flow-through holes; 13-a second lead aperture; 14-an exhaust channel; 2-a soil sampling assembly; 21-a soil sampling pipe; 211-soil sample tube; 2111-a tube boot; 2112-sealing cover; 212-residual soil pipe; 213-connecting tube; 22-a first sliding mechanism; 3-a detection component; 31-a moisture content detection member; 311-center probe; 312-peripheral probes; 32-a support bar; 33-a second sliding mechanism; 331-first lead aperture; 332-wire guides; 4-a drill pipe; 41-an extension rod; 5-water content processing equipment; 6-a cable; 61-a wire; 7-wire spool.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will describe in detail a specific embodiment of the present application with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The embodiment of the application provides a thin-wall soil sampler of measurable soil sample water content, and the soil sampler is applied to geotechnical engineering investigation, specifically is arranged in taking the undisturbed soil body and measuring the water content in the undisturbed soil body, provides soil body water content data for geotechnical engineering investigation, provides the undisturbed soil body that does not receive mechanical disturbance simultaneously for the indoor test of survey each soil layer soil body physical mechanics parameter.
When the device is used, the soil sampler provided by the embodiment of the application is connected with a drill rod. When soil in a deep place needs to be taken, the drilling machine is connected with the drill bit through the drill rod, the drill hole is drilled to the depth of the soil to be taken, and then the drill bit is detached and the soil taking device is replaced to be connected with the drill rod for taking the soil. Because the soil sampler can continuously penetrate into the soil body along the drill hole in the sampling process, a continuous measurement value of the natural water content of the soil sample can be formed in the vertical direction in the drill hole.
The soil sampler in the related art presses the thin-wall device into a soil body by pressing the drill rod to take a soil sample, the upper end inside the thin-wall device is fixed with an annular water content test sensor, the lower end of the annular water content test sensor is connected with a probe, and the probe is used for measuring the water content of the soil sample. Above-mentioned scheme has following shortcoming, because the thin-walled ware is pushed down at the drilling rod and is pushed into the soil body and get soil, if crooked takes place for drilling rod and thin-walled ware, can influence the quality of getting soil, simultaneously, because the probe is located the inside upper end of thin-walled ware, and at the in-process of taking the soil sample, the thin-walled ware can cause mechanical disturbance to the soil sample, consequently, the water content of the soil sample that the probe was measured is the water content data that receives mechanical disturbance, and this water content data can not reliably reflect the water content of the original state soil body, can not provide reliable correction reference for the indoor test data.
The thin-wall soil sampler capable of measuring the water content of the soil sample is newly designed in structure, the limiting pipeline is arranged on the outer side of the soil sampling pipe, the soil sampling pipe is in sliding connection with the limiting pipeline through the first sliding mechanism to sample soil, the soil sampling pipe is guaranteed not to be inclined when the soil sampling pipe is used for sampling soil, and the soil sampling quality is improved; the water content detection piece is arranged at one end, far away from the base, of the soil sampling pipe, the water content of the soil body is measured before the soil sample is taken, mechanical disturbance generated in the soil sample taking process is avoided, the accuracy of measuring the water content of the soil body is improved, and the reliability of subsequent engineering construction is ensured.
Referring to fig. 1 and 2, the thin-wall geotome capable of measuring the water content of a soil sample provided by the embodiment of the application comprises a base 1, a geotome 2 and a detection assembly 3; the first end of the base 1 is used for being connected with the drill rod 4, and the second end of the base is provided with a limiting pipeline 11; the soil sampling assembly 2 comprises a soil sampling pipe 21, the soil sampling pipe 21 and the limiting pipeline 11 have the same extending direction and are positioned in the limiting pipeline 11, and the soil sampling pipe 21 is connected with the limiting pipeline 11 in a sliding mode through a first sliding mechanism 22; detection module 3 is located soil sampling pipe 21 inside, through second slide mechanism 33 and soil sampling pipe 21 sliding connection, detection module 3 includes water content detection piece 31 and bracing piece 32, and the first end of bracing piece 32 and the second of base 1 hold fixed connection, and the second of bracing piece 32 holds and 31 fixed connection with water content detection piece, and the second end of bracing piece 32 is close soil sampling pipe 21 and is kept away from the one end of base 1.
The embodiment of the application provides a pair of thin wall geotome of measurable soil sample water content, detect 31 with the water content and fix the one end that the bracing piece 32 is close geotome 21 and keeps away from base 1, realize carrying out soil body water content earlier and measure, carry out the soil sample again and take, second end at base 1 sets up spacing pipeline 11, geotome 21 is through first slide mechanism 22 and spacing pipeline 11 sliding connection, geotome 21 is along the soil body of spacing pipeline 11 impressing, geotome 21 can not take place crooked, the quality of geotome is high. Specifically, a first end of the base 1 is used for being connected with the drill rod 4, a limiting pipeline 11 is arranged at a second end of the base, the extending direction of the soil sampling pipe 21 is consistent with that of the limiting pipeline 11 and is located in the limiting pipeline 11, the soil sampling pipe 21 is connected with the limiting pipeline 11 in a sliding mode through a first sliding mechanism 22, the soil sampling pipe 21 is pushed to slide relative to the limiting pipeline 11, and the soil sampling pipe 21 is pressed into soil along the limiting pipeline 11 to realize soil sampling of the soil sampling pipe; the detection assembly is located soil sampling intraductal, through second slide mechanism and soil sampling pipe sliding connection, and the detection assembly includes water content detection piece 31 and bracing piece 32, and the first end of bracing piece 32 and the second of base 1 hold fixed connection, and the second of bracing piece 32 holds and 31 fixed connection of water content detection piece, and the second of bracing piece 32 holds the one end that base 1 was kept away from to soil sampling pipe 21. When carrying out the geotome, be connected geotome and drilling rod 4, transfer the geotome to the relevant position, through exerting pressure to drilling rod 4, carry out soil body water content measurement in pressing into soil with water content detection piece 31, then exert thrust to geotome 21 for geotome 21 and spacing pipeline 11 relative slip are impressed the soil body along spacing pipeline 11 with geotome 21 and are realized the geotome of geotome. Compared with the prior art, the circular ring type water content testing sensor is arranged at the upper end of the thin-wall pipe, the drill rod is driven by the drilling machine to enable the thin-wall device connected with the drill rod to be pressed into the soil body for soil sample collection, the water content of the soil body is measured before the soil sample collection, the soil sampling pipe 21 is pressed into the soil body along the limiting pipeline 11 for soil sampling, high-quality water content data are obtained for geotechnical engineering investigation, the reliability of subsequent engineering construction is improved, and meanwhile, the soil sampling quality is high. .
In order to avoid mechanical interference to soil body caused by the wall of the soil sampling pipe 21 when soil sampling is performed, the thin-wall soil sampling pipe 21 is adopted in the embodiment of the application.
In order to enable the thin-wall soil sampler capable of measuring the water content of the soil sample to be placed in a deeper soil body to take the soil sample, the drill rod 4 is further connected with an extension rod 41 in the embodiment of the application, the extension rod 41 extends to the ground, and after soil sampling is completed, the soil sampler is lifted through the extension rod 41.
The first sliding mechanism 22 is used to make the soil sampling pipe 21 and the limiting pipeline 11 slide relatively, and the specific implementation manner is various, as long as the soil sampling pipe 21 and the limiting pipeline 11 can slide relatively. First slide mechanism 22 can set up the slide rail including sliding fit's sliding part and slide rail at spacing pipeline 11 inner wall, is connected sliding part and geotome 21 for sliding part and slide rail sliding fit, first slide mechanism 22 also can be the piston. Because piston simple structure, simple to operate, and the leakproofness is good, consequently, first slide mechanism 22 is first piston in this application embodiment, and the one end and the first piston fixed connection that geotome 21 is close to base 1, and geotome 21 is through first piston and spacing pipeline 11 sealed sliding connection.
Specifically, first piston and second piston are high strength engineering resin component in this application embodiment, and bracing piece 32 is the steelwork, and first piston external diameter and spacing pipeline 11 inner wall phase-match, and second piston diameter and geotome 2 inner wall phase-match are 100 mm.
In order to push the soil sampling pipe 21 and the limiting pipeline 11 to slide and press the soil into the soil body to sample soil, a linear motor can be arranged on one side, close to the first sliding mechanism 22, of the base 1, the output end of the linear motor is connected with the first sliding mechanism 22, thrust is provided through the linear motor, a pressure cavity can be formed through the first piston and the base 1, medium is input into the pressure cavity, and the first piston is pushed to slide along the limiting pipeline 11 in the direction away from the base 1 through the medium.
If the linear motor is adopted to provide thrust, a set of linear motor and a push rod need to be additionally arranged, the structure is complex, and the operation is inconvenient. The pressure chamber has between first piston and the base 1 in this application embodiment, has seted up medium through-hole 12 on the base 1, and medium through-hole 12 communicates pressure chamber and medium source, and when the medium got into the pressure chamber by medium through-hole 12, can promote first piston along spacing pipeline 11 the slip of keeping away from base 1 to the direction motion of drive geotome 21 to keeping away from base 1. Simple structure and convenient operation.
The medium can be water, gas or hydraulic oil. The medium in the embodiment of the application adopts water, is easy to obtain and is safe to use.
The medium passage opening 12 can be connected directly to the medium source or a buffer chamber can be provided between the medium source and the medium passage opening 12. The medium flow hole 12 is directly connected with a medium source, and the speed of the medium entering the pressure cavity cannot be controlled, so that the pressure in the pressure cavity cannot be stably increased, and the soil borrowing quality is influenced. Thus, in the embodiment of the application, a buffer chamber is provided in the base 1, which buffer chamber is adapted to communicate with the bore inside the drill rod 4, and a medium communication hole 12 is adapted to communicate the buffer chamber with the pressure chamber. The medium flowing speed is controlled through the buffer cavity, so that the soil taking pipe is stably pressed into a soil body to take soil, and the soil taking quality is improved.
One or more medium circulation holes 12 can be arranged, if one medium circulation hole is arranged, the speed of medium flowing into the pressure cavity is slow, the pressure of the pressure cavity is accelerated slowly, and the soil taking efficiency of the soil taking pipe 21 is influenced. Therefore, in the present embodiment, the medium circulation holes 12 are provided in plural numbers, and the plural medium circulation holes 12 are uniformly arranged along the inner wall of the pressure chamber at the outlet of the pressure chamber. Can improve the pressure boost speed of pressure chamber through a plurality of medium flow hole 12, and then improve the efficiency of borrowing, the even overall arrangement of a plurality of medium flow hole 12 is favorable to the even atress of pressure chamber, keeps the balance of pressure chamber.
The soil sampling pipe 21 is used for sampling soil samples, and the soil sampling pipe 21 can be an integral pipe body or a multi-section pipe body.
If soil sampling pipe 21 formula body as an organic whole, when soil sampling pipe 21 is filled with appearance soil, second slide mechanism 33 and determine module 3 are located soil sampling pipe 21 and are close to first slide mechanism 22 one end, the soil sample in soil sampling pipe 21 has received the disturbance of water content detection piece 31, influence the quality of borrowing soil, simultaneously, because water content detection piece 31 is located soil sampling pipe 21, for not causing the secondary disturbance to the soil sample in soil sampling pipe 21, when the soil sample is sealed up for deposit, need seal up second slide mechanism 33 and water content detection piece 31 together for it all will consume water content detection piece 31 and second slide mechanism 33 just to make every turn soil sample take.
In order to improve the sampling quality of the soil sampler and save the sampling cost of the soil sample, the soil sampling pipe 21 in the embodiment of the present application comprises a soil sampling pipe 211 and a soil residue pipe 212 which are detachably connected together, the soil residue pipe 212 is fixedly connected with a first piston, and the length of a second piston and a water content detection piece 31 along the extension direction of the soil sampling pipe 21 is less than that of the soil residue pipe 212, by the above scheme, when the soil sampling pipe 21 takes soil, the second piston drives the water content detection piece 31 to move towards the first piston 1, the water content detection piece 31 is located in the soil residue pipe 212, after the soil sampling pipe 21 is lifted, the soil sample disturbed by the water content detection piece 31 is collected by the soil residue pipe 212, the soil sampling pipe 211 collects the soil sample which is not disturbed by the water content detection piece 31, so that the water content measurement and the soil sample sampling process are not influenced by each other, the water content deviation of the soil sample caused by mechanical disturbance is reduced, and reliable correction reference can be provided for indoor test data, simultaneously improved the soil sample quality in the sample soil pipe 211, it is specific, the length of surplus soil pipe 212 is 150mm, and water content detection piece 31 length is 100 mm.
The sample soil pipe 211 and the residual soil pipe 212 are detachably connected, so that the soil sample in the sample soil pipe 211 and the residual soil pipe 212 can be conveniently separated. Meanwhile, when the sample soil is sealed, the sample soil is sealed only by detaching the sample soil pipe 211 from the residual soil pipe 212, the sample soil is sealed, after the sample soil in the residual soil pipe 212 is pushed out as waste soil, the residual soil pipe 212 is cleaned and then connected with a new sample soil pipe 211, the soil sample can be collected again, the water content detection part 31 and the second sliding mechanism 33 are not required to be consumed in the soil sample collection each time, and the soil sample collection cost is reduced.
The detachable connection of the sample soil pipe 211 and the residual soil pipe 212 can be a threaded connection, a snap connection and the like, wherein in the threaded connection mode, the sample soil pipe 211 and the residual soil pipe 212 can be sleeved together through threads, and the sample soil pipe 211 and the residual soil pipe 212 can also be connected together through threads by using the connecting pipe 213.
If the sample soil pipe 211 and the residual soil pipe 212 are sleeved together through the threads, when sample soil and detection soil need to be separated, the sample soil close to the joint of the sample soil pipe 211 and the residual soil pipe 212 is disturbed when the sample soil pipe 211 is disassembled, so that the sampling quality of the sample soil is influenced; the buckling connection mode ensures that the connection between the soil sampling pipe 211 and the residual soil pipe 212 is not reliable enough, and the reliability of soil sampling by pressing the soil sampling pipe 21 into the soil body is influenced.
Therefore, soil sampling pipe 21 in this embodiment of the application still includes connecting pipe 213, and the outer wall of sample soil pipe 211 and surplus soil pipe 212 all is equipped with the screw thread, and the inner wall of connecting pipe 213 is provided with the screw thread, and connecting pipe 213 cover is established in the outside of sample soil pipe 211 and surplus soil pipe 212 junction, connects sample soil pipe 211 and surplus soil pipe 212 through the screw thread. When the sample soil and the detection soil are required to be separated, the connecting pipe 213 sleeved on the outside of the joint of the sample soil pipe 211 and the residual soil pipe 212 is unscrewed, and the soil sample is cut off by the gap extending into the joint of the sample soil pipe 211 and the residual soil pipe 21 through the soil cutting knife, so that the mechanical disturbance when the sample soil and the detection soil are separated is avoided, and the sample soil pipe 211 and the residual soil pipe 212 are reliably connected, are convenient to detach and are easy to operate.
After the sample soil in the sample soil pipe 211 is separated from the residual soil pipe 212, because two ends of the sample soil are exposed in the external environment, the sample soil is easily influenced by mechanical disturbance and environmental temperature and humidity in the later transportation and storage processes, and the subsequent indoor test measurement result is influenced. Therefore, referring to fig. 3, in the embodiment of the present invention, the sealing caps 2112 are connected to the two ends of the soil sample tube 211, and the soil sample in the soil sample tube 211 is sealed by the sealing caps 2112, thereby avoiding the influence of the mechanical disturbance of the external environment and the temperature and humidity.
The residual soil pipe 212 and the first piston may be welded together or may be detachably coupled together. Because surplus soil pipe 212 repeatedly usable, and the screw thread that sets up at surplus soil pipe 212 outer wall uses for a long time and can receive wearing and tearing and become invalid, if surplus soil pipe 212 and first piston welding, then when needing to be changed surplus soil pipe 212, first piston need be changed in the lump, and the cost is higher, and simultaneously, surplus soil pipe 212 makes the clearance of surplus soil pipe 22 inconvenient with first piston fixed connection. Therefore, the residual soil pipe 22 and the first piston are detachably connected in the embodiment of the application, when the residual soil pipe 212 needs to be replaced, only the residual soil pipe 212 needs to be detached, and a new residual soil pipe 212 needs to be replaced, so that the use cost of the soil sampler is saved. When the residual soil pipe 212 needs to be cleaned, the residual soil pipe 212 is detached for cleaning, and cleaning is convenient. The residual soil pipe 22 and the base 1 are detachably connected together through threads in the embodiment of the application, and the threaded connection structure is simple and the connection is reliable.
Because the water content detection piece that adopts the time domain reflection principle need possess inner conductor electrode and outer conductor electrode, consequently, water content detection piece 31 includes a central probe 311 and a plurality of peripheral probe 312 in this application embodiment, and a plurality of peripheral probe 312 encircle the even setting of central probe 311's axis, and central probe 311 and a plurality of peripheral probe 312 all set up along the extending direction of geotome 2, and lie in the piston and keep away from one side of base 1. The central probe 311 is used as an inner conductor electrode, the peripheral probe 312 is used as an outer conductor electrode, and a plurality of peripheral probes 312 surrounding the central probe 311 are arranged to form a ring-shaped coaxial electrode, so that the water content detection precision is improved.
In order to obtain water content data with high reliability, the larger the number of peripheral probes 312, the better. In practical application, the central probe 311 and the two peripheral probes 312 are arranged at an interval in a straight line along the side of the piston away from the base 1 in the embodiment of the present invention, considering that the larger the number of the peripheral probes 312, the larger the resistance applied when the peripheral probes are pressed into the soil, and the larger the disturbance to the soil.
Further, in the embodiment of the present application, the central probe 311 and the peripheral probe 312 are TDR probes, the material is steel, the diameter is 5mm, and the distance between the central probe 311 and the peripheral probe 312 is 30 mm.
The water content detecting member 31 and the second sliding mechanism 33 may be welded or detachably connected. Because water content detection piece 31 need impress in the soil body when measuring the soil body water content, and water content detection piece 31 can used repeatedly again, long-term the use can produce extrusion deformation or damage. If water content detection piece 31 and second slide mechanism 33 welding, take place to warp or damage when needing to be changed when water content detection piece 31, need change second slide mechanism 33 in the lump, the replacement cost is higher, simultaneously, because surplus soil pipe 212 repeatedly usable, use up at every turn and need clear up, if water content detection piece 31 and second slide mechanism 33 welding together, be unfavorable for the clearance of surplus soil pipe 212. Therefore, the water content detection piece 31 and the second sliding mechanism 33 can be detachably connected in the embodiment of the present application, the cleaning and the replacement are convenient, and the replacement cost is saved. Further, water content detection piece 31 and second slide mechanism 33 threaded connection, simple structure connects reliably, dismantles the convenience.
Similarly, the support rod 32 and the second sliding mechanism 33, and the base 1 and the limiting pipe 11 are all connected by screw threads.
Moisture content detection piece 31 needs data transmission to moisture content processing apparatus 5 that detects, handle the analysis and show final moisture content through moisture content processing apparatus 5, consequently, moisture content detection piece 31 needs to be connected with moisture content processing apparatus 5 through cable 6, it is concrete, moisture content processing apparatus 5 adopts TDR moisture content tester in the embodiment of this application, TDR moisture content tester passes through cable 6 and moisture content detection piece 31 and launches and receive electromagnetic wave signal to soil sample, utilize the time domain reflection principle, measure and calculate the moisture content of soil sample.
Because the in-process that the soil sampling was taken to soil sampling pipe 21, water content detection piece 31 can slide to being close to base 1 one end through second slide mechanism 33, if draw forth cable 6 by the one side that second slide mechanism 33 kept away from base 1, when second slide mechanism 33 drove water content detection piece 31 and slides to being close to base 1 one end, cable 6 can be in soil sampling pipe 21, produce mechanical disturbance to the sample soil in sample soil pipe 211, influence the quality of borrowing, simultaneously, after the soil sampling is accomplished, cable 6 is located sample soil pipe 211 and surplus soil pipe 212, when through cutting the native sword with the separation of detection soil, need cut off cable 6 and just can separate sample soil and detection soil, can cause the waste of cable 6 like this.
If the cable 6 is led out from the upper end of the second piston through the soil sampling pipe 21, the first piston, the pressure cavity and the base 1 in sequence, the channel for communicating the outside of the sampler with the pressure cavity and the channel for communicating the pressure cavity with the inside of the soil sampling pipe 21 can affect the tightness of the pressure cavity, so that water leakage is caused, and the soil sampling quality can be affected when the water leaks into the soil sampling pipe 21.
Therefore, referring to fig. 2, 5 and 6, in the embodiment of the present application, the second piston has a first lead hole 331 therein, the base has a second lead hole 13 therein, the first lead hole 331 communicates the water content detecting member 31 with the inside of the support rod 32, the second lead hole 13 communicates the inside of the support rod with the outside of the base 1, and the water content detecting member 31 is connected to the water content treating apparatus 5 through the cable 6 sequentially inserted through the first lead hole 331 and the second lead hole 13. Like this, when second slide mechanism 33 drives water content detection piece 31 to sliding to being close to base 1 one end, cable 6 is in one side that second slide mechanism 33 is close to base 1 all the time, can not produce mechanical disturbance to the sample soil that second slide mechanism 33 kept away from the soil sampling pipe 21 of base 1 one side and was adopted, also can not cut off cable 6 when cutting the native sword with sample soil and detecting soil and separating, improved the quality of taking of sample soil, practiced thrift the cost. Meanwhile, the sealing performance of the pressure cavity is improved.
Referring to fig. 2 and 5, in the second sliding mechanism 33 of the embodiment of the present invention, three wire holes 332 are further provided, through which the one center probe 311 and the two peripheral probes 312 communicate with the first wire hole 331, and the one center probe 311 and the two peripheral probes 312 pass through the three wire holes 332 respectively through the three wires 61, and the cable 6 is received in the first wire hole 331.
Since the water content detecting element 31 slides to the end close to the base 1 through the second sliding mechanism 33 in the soil sampling process of the soil sampling pipe 21, and air exists between the second sliding mechanism 33 and the first sliding mechanism 22, in order to avoid the air pressure from affecting the sliding of the second sliding mechanism 33 and further affecting the soil sampling, referring to fig. 2 and 6, in the embodiment of the present application, the base 1 is provided with the exhaust passage 14 for communicating the inside of the soil sampling pipe 21 with the outside of the base 1, and when the second sliding mechanism 33 slides to the end close to the base 1, the air between the second sliding mechanism 33 and the first sliding mechanism 22 is exhausted through the exhaust passage 14, so that the soil sampling pipe 21 can conveniently sample the soil.
Because geotome 21 is when taking the soil sample, need be through exerting pressure to geotome 21, go into the geotome 21 and carry out the borrowing in the soil, consequently, in order to make things convenient for the impressing of geotome 21, there is pipe boot 2111 at the end connection that base 1 was kept away from to geotome 21 in this application embodiment for geotome 21 is changeed and is pressed into in the soil, reduces the pressure that receives in the geotome 21 pressed into the soil, extension geotome 21's life.
In order to prevent the cable 8 between second pin hole 13 and the water content treatment device 5 from knotting and winding, set up wire reel 7 between second pin hole 13 and water content treatment device 5 in this application embodiment, arrange cable 6 between second pin hole 13 and the water content treatment device 5 through wire reel 7 in order for cable 6 neatly arranges its life.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (15)
1. A thin-wall geotome of measurable soil sample water content which characterized in that includes:
the first end of the base is used for being connected with the drill rod, and the second end of the base is provided with a limiting pipeline;
the soil sampling assembly comprises a soil sampling pipe, the extending direction of the soil sampling pipe is consistent with that of the limiting pipeline, the soil sampling pipe is positioned in the limiting pipeline, and the soil sampling pipe is connected with the limiting pipeline in a sliding mode through a first sliding mechanism;
the detection assembly is located inside the soil sampling pipe, through the second slide mechanism with soil sampling pipe sliding connection, the detection assembly includes that the water content detects a and bracing piece, the first end of bracing piece with the second end fixed connection of base, the second end of bracing piece with water content detects a fixed connection, the second end of bracing piece is close the soil sampling pipe is kept away from the one end of base.
2. The thin-wall soil sampler capable of measuring the water content of the soil sample as claimed in claim 1, wherein the first sliding mechanism is a first piston, one end of the soil sampling pipe close to the base is fixedly connected with the first piston, and the soil sampling pipe is in sealed sliding connection with the limiting pipeline through the first piston.
3. The thin-walled soil sampler of claim 2 wherein the second sliding mechanism is a second piston, the first end of the support rod is slidably disposed through the first piston and fixedly connected to the second end of the base, the second end of the support rod is fixed to the second piston, and the support rod and the water content detector are sealingly and slidably connected to the soil sampling pipe via the second piston.
4. The thin-wall soil sampler capable of measuring the water content of the soil sample as claimed in claim 2, wherein a pressure chamber is arranged between the first piston and the base, a medium through hole is formed in the base, the medium through hole communicates the pressure chamber with a medium source, and when a medium enters the pressure chamber from the medium through hole, the first piston can be pushed to slide away from the base along the limiting pipeline, so that the soil sampling pipe is driven to move away from the base.
5. The thin-wall soil sampler capable of measuring the water content of the soil sample as claimed in claim 4, wherein the base is internally provided with a buffer cavity, the buffer cavity is used for being communicated with a hole inside the drill rod, and the medium circulation hole is used for communicating the buffer cavity with the pressure cavity.
6. The thin-wall geotome capable of measuring the water content of the soil sample as claimed in claim 5, wherein the medium circulation holes are plural, and the medium circulation holes are uniformly distributed along the inner wall of the pressure chamber at the outlet of the pressure chamber.
7. The thin-wall soil sampler capable of measuring the water content of the soil sample as claimed in claim 3, wherein the soil sampling pipe comprises a soil sampling pipe and a soil residue pipe which are detachably connected together, the soil residue pipe is fixedly connected with the first piston, and the length of the second piston and the water content detection piece along the extension direction of the soil sampling pipe is smaller than that of the soil residue pipe.
8. The thin-wall soil sampler capable of measuring the water content of the soil sample as claimed in claim 7, wherein the soil sampling pipe further comprises a connecting pipe, the outer walls of the soil sampling pipe and the residual soil pipe are both provided with threads, the inner wall of the connecting pipe is provided with threads, the connecting pipe is sleeved outside the joint of the soil sampling pipe and the residual soil pipe, and the soil sampling pipe and the residual soil pipe are connected through the threads.
9. The thin-walled soil sampler of claim 7 wherein the residual soil pipe is removably connected to the first piston.
10. The thin-walled soil sampler capable of measuring water content of a soil sample as claimed in claim 7, further comprising a sealing cap, wherein the sealing cap is connected with two ends of the soil sample tube for sealing the soil sample in the soil sample tube.
11. The thin-wall soil sampler capable of measuring the water content of the soil sample according to any one of claims 7 to 10, wherein the water content detecting element comprises a central probe and a plurality of peripheral probes, the plurality of peripheral probes are uniformly arranged around the axis of the central probe, and the central probe and the plurality of peripheral probes are arranged along the extension direction of the soil sampling pipe and are positioned on one side of the piston away from the base.
12. The thin-walled soil sampler of any one of claim 11 wherein the central probe and two of the peripheral probes are spaced in a line along the side of the piston remote from the base.
13. The thin-wall soil sampler capable of measuring the water content of the soil sample according to any one of claims 7 to 10, wherein the water content detection piece is detachably connected to one end of the second piston, which is far away from the base.
14. The thin-walled soil sampler capable of measuring water content of a soil sample according to any one of claims 7 to 10, wherein the second piston has a first lead hole therein, the base has a second lead hole therein, the first lead hole connects the water content detector to the inside of the support rod, the second lead hole connects the inside of the support rod to the outside of the base, and the water content detector is connected to a water content processing device via a cable sequentially inserted through the first lead hole and the second lead hole.
15. The thin-wall soil sampler capable of measuring the water content of the soil sample according to any one of claims 1 to 7, wherein the base is provided with an exhaust channel, and the exhaust channel is used for communicating the inside of the soil sampler with the outside of the base.
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| CN202111281619.0A CN114199613A (en) | 2021-11-01 | 2021-11-01 | Thin-wall soil sampler capable of measuring water content of soil sample |
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| CN202111281619.0A CN114199613A (en) | 2021-11-01 | 2021-11-01 | Thin-wall soil sampler capable of measuring water content of soil sample |
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Application publication date: 20220318 |